Method and electronic device for controlling volume

Abstract

An electronic device is provided. The electronic device may output a sound output event through a speaker at an output volume, generate a predicted input waveform based on the output sound event, compare a level of an input sound received via a microphone with a predicted level of the predicted input waveform, determine when a level of the input sound is lower than a threshold value for a predetermined time, and control the output volume of the sound output event when the level of the input sound is lower than the threshold value for the predetermined time.

What is claimed is: 
     
       1. A method of controlling an electronic device, the method comprising:
 outputting a sound output event through a speaker at a first output volume; 
 generating a predicted input waveform based on the sound output event; 
 comparing a level of an input sound received via a microphone with a predicted level of the predicted input waveform; 
 determining a threshold value waveform by subtracting an offset value from the predicted level of the predicted input waveform; 
 outputting a sound at a second output volume when the level of the input sound received via the microphone is lower than the threshold value waveform of the predicted input waveform for a predetermined duration of time. 
 
     
     
       2. The method of  claim 1 , wherein the second output volume is lower than the first output volume when the level of the input sound received via the microphone is lower than the threshold value waveform for the predetermined duration of time. 
     
     
       3. The method of  claim 1 , further comprising:
 determining whether a movement of the electronic device is detected; and 
 outputting a sound at a third output volume which is lower than the second output volume when the movement of the electronic device is detected. 
 
     
     
       4. The method of  claim 1 , wherein the offset value is predetermined. 
     
     
       5. The method of  claim 1 , further comprising outputting the sound at the first output volume when the level of the input sound received via the microphone is higher than or equal to the threshold value waveform below the predicted level of the predicted input waveform. 
     
     
       6. The method of  claim 1 , further comprising, calculating the predicted level of the predicted input waveform based on a configuration of the electronic device. 
     
     
       7. The method of  claim 6 , wherein the predicted level of the predicted input waveform is based on a location of the speaker that outputs the sound output event and a location of the microphone that receives the sound output event. 
     
     
       8. An electronic device comprising:
 a speaker; 
 a microphone; and 
 at least one processor configured to:
 output a sound output event through the speaker at a first output volume, 
 generate a predicted input waveform based on the sound output event, 
 compare a level of an input sound received via the microphone with a predicted level of the predicted input waveform, 
 determine a threshold value waveform by subtracting an offset value from the predicted level of the predicted input waveform; 
 output a sound at a second output volume when the level of the input sound received via the microphone is lower than the threshold value waveform of the predicted input waveform for the predetermined duration of time. 
 
 
     
     
       9. The electronic device of  claim 8 , wherein the at least one processor is further configured to control the second output volume to be lower than the first output volume when the level of the input sound received via the microphone is lower than the threshold value waveform for the predetermined duration of time. 
     
     
       10. The electronic device of  claim 8 , wherein the at least one processor is further configured to:
 determine whether a movement of the electronic device is detected, and 
 output a sound at a third output volume which is lower than the second output volume when the movement of the electronic device is detected. 
 
     
     
       11. The electronic device of  claim 8 , wherein the offset value is predetermined. 
     
     
       12. The electronic device of  claim 8 , wherein the at least one processor is further configured to output the sound at the first output volume when the level of the input sound received via the microphone is higher than or equal to the threshold value waveform below the predicted level of the predicted input waveform. 
     
     
       13. The electronic device of  claim 8 , wherein the at least one processor is configured to calculate the predicted level of the predicted input waveform based on a configuration of the electronic device. 
     
     
       14. The electronic device of  claim 13 , wherein the predicted level of the predicted input waveform is based on a location of the speaker that outputs the sound output event and a location of the microphone that receives the sound output event.